Concentrating-trap.



G. GUNDAKBR. CONGBNTRATING TRAP. 111 1 L1o1vr1o1sr FILED MAY 4, 1911.

Patented Oct. 17, 1911.

mul-IA WIA?" Cb.. Wwllm. D. C.

UNITED STATES PATENT OFFICE.

GEORGE GUNDAKER, OF MEADERVILLE, MONTANA, ASSIGNOR OF ONE-HALF TO I-IIM-SELF AND ONE-HALF TO ANTONE C. GROSSO, BOTH OF MEADERVILLE, MONTANA.

1,oo5,sas.

^ Specification of Letters Patent.

CONCENTRATING-TRAP.

ratenteu oet. 1v, 1911.

Application filed May 4, 1911. Serial No. 625,063.

To all whom it may concern.

Be it known that I, GEORGE GUNDAKER, a citizen of the United States,residing at Meaderville, county of Silverbow, State of Montana, haveinvented certain new and useful Improvements in Concentrating- Traps, ofwhich the following is a specification, reference being had to theaccompanying drawings.

This invention relates 'to ore concentrating traps yof the type adaptedfor .use in separating the valuable metal from the tailings of finelypulverized ores. For the separation of the metal from the ores, aninclined trough is used provided with a series of traps one afteranother along the trough. The pulverized ore is miXed thoroughly withwater and washed down the trough past the traps, the valuable metalbeing heavier than the remainder of the ore and therefore being keptclose to the bottom of the trough. When the pulp comes to the first oneof the traps, the greater portion of the valuable metal is washedthrough the opening through the trap, the size of the opening throughthe trap being preferably regulated in accordance with the rate of flow-of the pulp and with the richness of the ore to attain this result. Itis desirable that the opening through the next succeeding trap shall besmaller since the pulp when it reaches that trap is of course leanerthan at first, and in general the opening through each succeeding trapis preferably made smaller than that through the trap neXt above italong the trough.

It is one of the objects of this invention t-o provide a new andimproved construction of trap by reason of which the opening through thetrap may be regulated easily and quickly and locked against change.

Another object of my invention is to provide means for keeping theopening through the trap constantly open.

Another object is to improve traps of this general type in sundrydetails hereinafter pointed out.

The means by which I have accomplished these objects are illustrated inthe accompanying drawings and are hereinafter speciically described.

That which I believe to be new is set forth in the claims.

In the drawings, Figure 1 is a side view 'of a portion of the t-rough,partly broken away, equipped with two of my improved traps, the nearside of the trough and trap being cut away. Fig. 2 is a cross-section online 2 2 of Fig. 1.

Referring to the several figures of the drawings in which correspondingparts are indicated by the same reference characters, 10 indicates aV-shaped trough provided with a tin or `other metal lining 11.

12 indicates V-shaped sheet-metal traps placed at intervals along thetrough 10, the trough being cut away for a short distance underneatheach trap. Each of the traps 1Q is also cutaway along its lower edge fora portion of its length, providing a slot 13.

1A indicates a long plate, pointed at each end, overlying the slot 13,the ends of t-he plate being curved downward so as to fit closely thesides of the trough from end to end. 15 indicates a screw passingthrough a suitable opening through said plate and extending down throughthe slot 13.

16 indicates a thumb-nut screw-threaded on the lower end of the screw15, by tightening which the plate 14 may be locked firmly in place atany point along the slot 13 and held securely against slipping along theslot.

17-18 indicate bearings secured on the upper edges of the trap 12 forthe shaft 19.

2O indicates a water-wheel non-rotatably secured upon the shaft 19.

21 indicates a crank formed in the shaft 19, on the horizontal portionof which is pivotally mounted a rod 22 extending downward through theslot 13.

As shown in Fig. 1, the upper end of the plate 14; is notched to fitclosely the rod 9.2 so that the plate may if desired be slid up andclamped in position to completely close the slot 13.

It will be understood that in operation the stream of water and pulprotates the shaft 19 through the medium of the water-wheel 20, thusreciprocating the rod 22 up and down through the slot 13, thuspreventing the clogging up of the slot 13 and maintaining the trapalways at its highest efficiency without the necessity for the consta-ntpresence of an attendant.

l/Vhat I claim as my invention and desire to secure by Letters Patentis,-

1. In combination a concentrating trap comprising a V-shaped troughprovided with an opening along its lower edge, a plate pointed at eachend, the ends of said plate provided With an opening along its` loweredge, a shaft mounted on said trap overlying said opening, a Water-Wheelmounted on said shaft and extending down into sald trap having itspaddles spaced from the bottom of said trap and adapted to loe operatedby the upper stratum of the stream flowing through the trap, a Crankformed in said shaft, and a rod pivotally mounted on Said 15 crank andextending through said opening.

GEORGE GUNDAKER. Witnesses:

JOHN HOKING, ANTONE GIANINO.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

